Sonic is currently giving away free licences for its PDF Creator software. The program allows you to create PDF files from almost any Windows application, and normally sells for $49.95.
To get a free licence code, head over to http://www.investintech.com/resources/blog/archives/2553-get-the-new-sonic-pdf-creator-3-0-free-on-facebook%E2%80%94limited-time-offer-only.html and follow the instructions.
Note that you'll need to "like" the company on Facebook in order to get your free licence code, which obviously also means that you'll need to be a Facebook member to qualify.
The program runs under Windows XP and above, and is a 14 MB download.